Automatic multiple-spindle lathe



w. G. BERRY. A AUTOMATIC MULTIPLE SPINDLE LATHE.

APPLICATION FILED DEC,6| IBIS.

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QM- 'ayn/ l@ web w.' s. BERRY. AUTOMATIC MULTIPLE SPINDLE LATHE.

APPLICATION FILE DEC6| 1918.

Patented N ov. 15, 1921.

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W.G.BERR

AUTOMATIC MULTIPLE SPINDLE LATHE. 'APPLICATION FILED 020.6. I9I8.

1,396,807, Patented Nov. 15, 1921.

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s 'L i* laj 4 I l* I W. G. BERRY. AUTOMATIC MULTIPLE SPINDLE LATHE.

APPLICATION FILED DEC.6| 1918.

Patented Nov. 15, 1921.

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UNITED STATES lATlazNTN OFFICE. i

WILLIAM GECRGE BERRY, 0F LONDON, ENGLAND.

aU'roMATIc MULTIPLE-SPINDLE LATHE.

` Speclcation of Letters Patent.

Patented Nov. 15, 1921.

Application led December 6, 1918. Serial No. 265,493.

To all /w/mm it may concern t `Be it known that I, WILLIAM GEORGE BERRY, a subject of His Majesty the King of Great Britain and Ireland, residing at Pepys road, Cottenham Park,fWimbledon, London, S. W. 19, England, have invented new and useful Im rovements in Automatic Multiple-Spindle athes, `of which the following is a specification.

`This invention has reference to automatic` multiple 'spindle lathes which are used for turning or forming `and cutting oli nut blanks, collars and innumerable other articles from the ends of long rods or tubes which are automatically fed through hollow spindles of the lathe.

My improvements enable a lathe for said" i purposes to be constructed which while being simple in construction easy to manipulate, requiring very little attention and not liable to undue wear, enables a very large output of said articles to be attained. i

According to this invention any convenxient number of hollow lathe spindles are arby means of automaticmechanismthey are intermittently fed for the required distance 4erations a number of articles are through the chuck like nose ends of the `spindles and are automatically gripped therein and the protruding end parts of the rods or tubes are then if necessary drilled or turned or otherwise acted on by a corresponding number of tools carried by a sliding head in frontof the spindles and the required portions forming blanks or other articles are ultimatelycut olf from the rods by cutting olif tools mounted on slides on a part carried by or at the frontof the head stock and actuated by a revolving cam. Or when said blanks or parts aremerely required to be cut otlp from the rods or tubes without being turned or drilled or otherwise operated on except by the cutting oil' tools, then the said tools carriedby the sliding head in front of the spindles may be dispensed with. `Mechanism is provided `for automatically effecting the various operations of themachine so that at each complete c cle of opormed and 'tall away corresponding with the number to the accompanyin of hollow lathe spindles with which the machine `is provided. i

l wi-ll describe myinvention by referring drawings of which- Figure 1 is a longitudinal sectional elevation of an automatic multiple spindle lathe constructed in accordance with this invent1on; i

F ig. 2 is a half plan ofthe same;

.Fig. 3 is a section plan of one of the hollow lathe spindles and its accessories;

Fig. 4 is a longitudinal sectional elevationand end view of one `of the split gri ping parts and inner tubes of the lat ie spindles;

Fig. 5 is a sectional elevation of one of the coned gripping chucks of the hollow lathe spindles F ig. 6 is a part sectional front elevation oi the head stock of the said machine;

Fig. 7 is a part sectional side elevation of the same;

Fig. 8 is a longitudinal sectional elevation of a modified arrangement of the said multiple spindle lathe;

Fig. 9 is a cross sectional elevation of parts of the same taken on line X X of Fig. 8, and looking toward the left hand of said n gures; and

the said machine.

I will describe my invention in connection with operating on rods but the same machine will equally well operate on tubes` The hollow lathe spindles l (say for instance eight `in number as shown, although I do not confine myself to any particular Fig. -10 is an end elevation of portions of number) are arranged at equal distances apart around the center of the stationary head stock A andrevolve in stationary bearings therein. For convenience of manufacture the head stock A comprises a body part 2 made with a suitable base 3 fixed to the bed plate 4 of the machine, this body part 2 being bored at 5 and there tted with a cylindrical part 6, one end of which is bored and furnished with bearings 7 for the lathe spindles 1 and a central bushing 8 for the outer tubular sleeve of the main spindle. Fitted in the open end `of this cylindrical part G there is a disk part 9 formed with a flange 1() which by screws 11 is fixed to the end of the cylinder `6, andthis disk part 9 is furnished with the ei ht bearings 12 for the lathe spindles 1 leaving a space between these bearings andthe bearings 7 for the Vpinions 13 on the lathe spindles 1. The disk part 9 also has a central bearing 111 for the outer sleeve of the main spindle.

' This main spindle 15 is tubular and passes ythrough the center of the'head-stocl A and.

end of this driving spindle 15 has fixed on it a driving pulley 17 which is the main driving pulley ot' the machine. Within the head stock A there is fixed on this hollow driving y shaft 12 a spur Wheel 18 which gears with the spur pinions 13 which are formed on the lathe spindles 1 and thus the lathe spindles are driven. rlhe gripping and feeding tor- Ward of the rods from which the articles are to be turned is effected by the following mechanism z-Each of the hollow lathe spindles 1 is at itsfront end furnished with a -hollow coned nose piece 19 and fitting in each of these there is a coned gripping chuck 2()I (shown separately in Fig. 5) which is fixed on the end of a tube 21 which fits in the hollow lathe spindle 1 and is continued to the back of the same. l will call this tube 21 the outer tube. Mounted on the back end of each of the hollow lathe spindles 1 there is a collar 22 having jointed to it at 23 a pair ot forwardly projecting operating levers 24 made with heels 25 which project through slots 2G in the collar 22 and spindle 1 and act on the end of the outer tube 21` the longer arms of these levers 24 bearing on sliding collars 27 slidably mounted on the outside oit the lathe spindles 1. Longitudinal movements along the lathe spindles 1 are imparted to these collars 27 by means of a circular block 28 which is arranged to slide on .the outside'of a sleeve 29 which is fixed to rand projects through the back end of the disk part 9 of the head stock. This Asliding circular block 28 is actuated by a tubular push bar 30 which is mounted inside the hollow driving spindle 15 and is con- .nected to the circular block 2S by the cross pin 31 Iworking'through slots in the slee-ve 29. The -eonnection .fot each of the sliding collars 27vto the sliding circular block 28 is preferably effected by a ring Apart which .engages in an annular groove in the periph- Iery Vof the `collar -27 and also engages in an annular groove inv theperipheryl ot the eircular :block 28. 'The hollow push bar 30 projects through the hollow main spindl 15 at .the .trontend ol'rthe same and fixed on that end ,there is a block 34 adapted to slide in longitudinal Aguides on bracket 36 fixed v,on ythe frontend-of the bed l of the machine. rllhe'said sliding block Sil is furished underneath .with a roller 92 engaging with agroove'tll Vot a cam 37 mounted on a cam `shaft 38 arranged longitudinally of `the lmachine underneath the main driving spindle and parallel therewith, this cani groove 9&3 being shaped so as to impart the proper longitudinal movements to the push bar 23() so that the movements ot the latter are imparted through the cross pin 31 and sliding bloei: ze and ring :lll to the sliding collars 27 on the hollow lathe spindles. which sliding collars when `moved bacia ardly open apart the `t'omfard ends or the levers 2l so that the inner short ends or heels 25 oll the levers act upon said outer tubes 21 in the lathe spindles 1 and push forward the cone-,l gripping chucks 2li in the eoned nose pieces 1S) of' the spindles and grip the rods and when the coned gripping chucks 2() are by the said cem groove 3G moved in the opposite directiin. the rods are released. 'the :Forward feeding movement oinA the rods is eliected by each lathe spindle having a split l ipping collar 3.() or other gripping part arranged within the hollow gripping clinchY 2li and fixed on the, end of a tube lll which l call the innu' tube and which is carried through the bach of' the outer tube 2l ol' the l ythe spindle. this inner tube Il() being` made of suitable diameter Yl'or the. rod which is being operated on to pass through and alf-:o to pass into the gripping collar 2li. '.ihese inner tubes hl() have collars pl-1. 12 preferably adjnstabl;Y screwed thereon or are otherwise .e

arranged at the bach ends to engage with a somewhat cireular plate lil which is mounted to slide on the sleeve 29 and is connected as by a cross pin to a central push bar Il5 which pi ses through the hollow push bar inl and t ough the front end o't the same where it is lixed on to a sliding block :lll adapted to slide along the slides 235 ol the longitudin-,xl slide bracket 3G above referred to this sliding block lli having fixed uinlerneulh it a roller i7 engaging with a cani groove 1H iii the cani 37 so as to impart the proper longitudinal movements at the proper times to the push rod l5 and the innerI tubes -ltl ol'- the lathe spindles. the. ram groove, 4H being so shaped that while the rods are being lgripped b v the chucks 2() in the nose pieces` lll olt the spindles the vleed gripping tubes #lll with their gripping ends Pif) move bach- `.verdly the required distance to talie a 'fresh iup on the rods and then move 'orward again with the rods when the rods ha ve been released by the gripping chucks 20.

immediately in front of the nosev piece 19 ol? the lathe spindles. cutting oli tools the cutting olf tool 55 ot any suitable con Htl i"struction adapted to cut off the required endportion of the rod which has been operated upon and these slides 49 are moved to and fro along their guides by the revolving cam ring`56 surrounding the lathe spindles `and adapted to revolve on the projecting circular `front part 53 of the head stock.

"each j head Said cam ring is fixed to the face of the `vvormfwheel 57 which is mounted to revolve ,oh the said projecting front part 53 of the head stock surrounding the lathe spindles 1.

`Eachwof the slides 49 has fixed on its back face a pin carryin a roller 58 engaging in the groove 59 of t e cam ring, this groove being shaped in sections corresponding with the lathe spindles ,1, in this case eight in number, `each section lhaving an inclined part 60 shaped so as to move the slide 49 comparatively slow] inwardly as the cutter 55 isoperating on the rod and this inclined `part then having a shar outward turn 61, to move Vthis cutter `an j slide backwardly and then terminating in a short circular ,arc A62 to cause the slides 49 to remain stationary duringithe proper perioduntil they are again moved inwardly by the inclines 160. ijrlhussimilar operations are caused on while the cam ring turns through one eighth" of a revolution. The worm wheel ring 57 is operated by means "of a worm 61'` on atransverse shaft 62 suitably geared to the main spindle l5 and this can conveniently be efected by the mainspindle 15 having fixed on it a chain wheel 63 which by means of an endless chain 64C gears withwa larger chain wheel 65 mounted to revolve dn a shaft below `the same, this chain wheel being geared as by bevel wheels 66,67 to across counter shaft.68 arranged below the cam `shaft 38 anddriving the lat- `ther by a worm 69pm the counter shaft 68 `gearing with a worm wheel 70 fixed on the `Cain shaft 38." The said cross counter shaft 68 is geared with the worm wheel 62 on the worm "61 which' drives the worm wheel 57 by means of a chain wheel 71 fixed on thecross shaft1 68 and gearingby endless chain 72 with the larger chain wheel73 fixed on the worin shaft 62. 0r it will be evident that any othersuitable arrangement of gearing may be employed.` The cam shaft 38 `is 'furnished withone or more cams such for instance `as` 74 for actuating the slide 75 which is orimay be provided and arranged in front` of the head stock Ato carry the tools for drilling, turning or otherwise operating `on the fore ends of the rods protruding through the nose pieces 19 before said nods are cut oil by the cutting tools. The said slide carrying these drilling, turning or other like tools can be of the usual construction as employed in other multiple spindle `lathes according .to` the number of teclsit is required to carry and the work to e oneas will readily beunderstood.

and feeding "the said cam sha conveniently As a modification, instead of the outer and inner tubes of the lathe s `indles being operated as aforesaid through push rods sliding through the main spindle of the machine and actuated by cams at the front ot' the machine," these push rods and cams may if desired be dispensed with and the sliding plate and central sliding block for operating the inner and outer tubes of the gripping A arrangement be operated by the sliding plate and central sliding block having two laterally projecting arms, one on each side of the machine and these furnished with rollers engaging with revolving cams on two` cam shafts one at each side of the machine arranged in suitable bearings on the body of the machine and parallel with the main sfpindle from which latter ts are driven the cams being shaped to give the proper sliding Inovements to the cross arms and sliding plate and central sliding block which actuate the innerand outer tubes of the feeding and gr'ilpping mechanism. i j his construction of my invention can be carried out as illustrated by Figs. 8, 9, and l() where it will be seen that the tubular push bar 30 and the sliding push bar 45 are dispensed with and the main driving shaft is made asa solid shaft marked 15x adaptedto revolve in the bushing 8 ot' thehead stock and in the sleeve 29 of the same. Instead of the cam 37 at the front of the machine as in Figs. l and 2, two of these cams are employed at the back of the machine and marked respectively 7 8, 79, one of which namely, 78 is mounted on the cam shaft 38 the latter being carried throughto the back of the head stock and the other said cam 79 ismounted on a second cam shaft 76 which iscarriedalong the back of the machine to the back of the head stock and supported in suitable bearings as by the bracket 77`and a serondbearing on the side of the head stock A not shown on my drawing. The central sliding block 28 which actuates the collars 27 on the lathe spindles is furnished with two laterally projecting arms 80, 81, one at each side of the vertical center line of the machine, these .arms 80, 81, being furnished with pins carrying rollers 82 engaging with the cam grooves 93 of the cams 78, 79, whichare arranged to impart the proper sliding movements to the sliding block 28. The circular plate 43 is similarly provided with two arms 83 only one of which can be seen in Fig. 8 and they are not shown in Fig. 9 as they are immediately behind the arms 80, 81. These arms 83 are similarly provided with pins carrying rollers working in the cam grooves 48 of the cams 78, 79, thesegrooves being shaped to impart the proper sliding movements to the circular plate 43 and the inner tubes 40 actuated thereby. The second cam shaft 76 can conveniently be driven from the-first cam shaft 38 by the threespur Wheels 84:, 85, and 86 of which the Wheels 84, and S6 are respectively fixed on the first cam shaft 38 and the second cam shaft 7 6 and the other wheel 85 is an idle Wheel gearing. With both and carried on a studr 87 on the bracket 88 Which alsov forms the support for the cross counter shaft V68. lIn this modification of my 4invention the counter shaft 68 and its Worm 69 are arranged above the worm Wheel 70 on ythe camshaft 38 as will be seen by Fi s.- .8 and 10. y Y

nlthe back end of tliebed plate 4L there may-be fixed a stand 89 made with a circular part 90 in which are fixed eight guide tubes 91 corresponding in position with the lathe spindles 1 and forming guides for the tubes which areA fed through the inner tubes 40.

rThe accompanying drawings illustrate what It consider to be the best Way of carry ing my invention into practice, but it Will be understood that my invention .is not limited .to the particular arrangementsshoiv-n as it Willbe evident these can be modified Witlr out departing from the nature of my invention.

yWhat I claim vvas my invention and desire toseeurezby Letters Patent is:

1. In amultiple spindle lathe, the combination of a head stock, a plurality of Workoarrying spindles mounted for rotation in said head stock, means Yfor rotating said spindles and including a central shaft mounted for rotation in the head stock, a gear secured to said shaft Within the head stock, and pinions carried bythe spindles in mesh With said gear, a tool slide for each spindle mounted in radial guides in the front face of said, head stock, a ring-like sectional .cam mounted for rotation .on'said head stock in a plane parallel with the front face thereof, means for rotating said cam, and means carried by said tool slides .for engaging said cam thereby to cause the slides to simultaneously move radially of the Work spindles during the rotationI of the cam.

2. In a multiple spindle lathe, the combination ofa head'stoclr, a plurality of ivorlrcarrying `spindles mounted for rotation in said head stock, a tool slide for each spindle mounted .in radial guides in the front face of said head stock, a Worm Wheel mounted for rotation on said head stock, a ring-like cam secured on said Worm Wheel for rotation in a. plane parallel with the front face of the head stock, means `tor rotating said Worm Wheel, and meanscarried Vby said tool slides :tor engaging said cam thereby to cause the slides -to simultaneously move radially of the Work spindlesduringthe rotation of the cam.

3. In a multiple spindle lathe, the combination of a head stock, a plurality of Workearryng spindles mounted for rotation` in a plane parallel with the *front tace thereof,

means for rotating the cam, means carried by said tool slides for engaging said cam thereby to cause the slide to simultaneously vmore radially of the work spindles during` the rotation ot the ram, and means for gripping` and feeding` the work through said spindles, said gripping and feeding means including a pluralityv of pivotally mounted Work-engaging levers at the rear et thel abrir-carrying spindles, and ram-operated slidable means passing through said head stoel: and adapted to shift said levers into and out oi Work-engaging position.

d. In a multiple spindle lathe, the combination oi. a head stock, a plurality oi' Workcarrying` spindles mounted for rotation in said head stock. means for rotating said spindles and including a Central 'shaft mounted for rotation in the head stock, a gear secured to said shaft Within the head stock, and pinions carried by the spindles in mesh with said gear, a tool slide for each spindle mounted in radial guides in the iront tace of said head stock, a Worm wheel mounted for rotation on said head stock, a ring-like cam secured to said Worm wheel for rotation in a plane parallel with the `front tace of the head stock, means for rotating said Worm-Wheel, and means carried by said tool slides for engaging said cam thereby to cause the slides to simultaneously move radially of the ivorlr spindles during the rotation of the cam.

5. In a multiple spindle lathe, the combination of a head stock, a plurality oit work carrying spindles mounted for rotation in said head stock, a tool slide for each spindle mounted in radial guides in the front face of said head stock, a. ring like sectional cam mounted for rotation on said head stock in a plane parallel with the front face thereof, means for rotating said rain, means carried by said tool slides for engaging said cam thereby to cause the. slide to simultaneously move radially of the Work spindles during the rotation of the cam, and means 'for gripping and feeding the Work through said spindles, said. gripping and feeding means includingT a plurality of Work gripping Incinbers slidable in the work-carrying spindles, and blocks slidably journaled in the center of the head stock and adapted to be shifted by cam means to move said work gripping members. 'i

6. In a multiple spindle lathe, the colnbination of a head stock, a plurality of Workcarrying spindles mounted for rotation in said head stock, a tool slide for each spindle mounted in radial guides in the front face of said head stock, a Worin wheel mounted for continuous rotation on said head stock, a ring-like cam secured to said Worm wheel for continuous rotation in a plane parallel with the front face of the head stock, means for rotating said Worm Wheel, and means carried by said tool slides for engaging said cam thereby to cause the slides to simultaneously move radially of the Work spindles during the rotation of the cam.

7. Ibn a multiple spindle lathe, the combination set forth in claim 3, said gripping and feeding means including a plurallty of pivotally mounted Worlrengaging levers at the rear of the work-carrying spindles, and cam operated slidahle means passing through said head stock and adapted to shift said levers into and out of Work-engaging position.

In testimony whereof I have signed my name to this specification.

WILLIAM GEORGE BERRY. 

